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JY-951 Waterborne Polyurethane Waterproof Coating

JY-951 Waterborne Polyurethane Waterproof Coating

JY-951 Waterborne Polyurethane Waterproof Coating is a single-component, water-based waterproof coating with good adhesion, elasticity and impermeability. It can bond to mortar, cement, stone and metal substrates and is suitable for application on damp substrates.
The coating is cold-applied and ready to use, making it suitable for roofs, bathrooms, balconies, exterior walls and other building waterproofing applications. Standard packaging is 20 kg per pail, with OEM/ODM cooperation available for international buyers.

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Product Overview

JY-951 Waterborne Polyurethane Waterproof Coating is a single-component liquid waterproofing material designed to form a continuous, flexible waterproof layer after application. Its water-based formulation allows cold application without complicated on-site mixing.

The coating provides adhesion to mortar, cement, stone and metal substrates and can also be used on damp substrates. Its combination of strength and elongation helps the waterproof layer accommodate substrate shrinkage and deformation.

JY-951 is suitable for a range of building waterproofing applications and can be supplied to contractors, distributors, importers and OEM/ODM customers.

Boasting excellent adhesion and impermeability, this coating exhibits strong bonding to substrates like mortar, cement, stone, and metal products, while also withstanding long-term sunlight exposure. Its core advantages include high strength, high elongation, good elasticity, and a reliable, long-lasting waterproof effect—making it widely adopted in various waterproof and anti-seepage projects.
As a professional manufacturer operating our own factory, we offer wholesale polyurethane coating waterproof services for this premium product, catering to both small-scale and large-volume project demands. For those interested in this top-tier waterproof solution, feel free to reach out to us directly for details on the polyurethane waterproof coating price and other cooperation-related inquiries.
Specification JY-951
Product Type Waterborne Polyurethane Waterproof Coating
Component Single Component
Physical State Liquid
Density 1.3–1.4 kg/L
Standard Packaging 20 kg/pail
Application Cold Applied
Application Temperature 5°C–35°C
Typical Consumption 1.8–2.5 kg/m²*

Jy-951 Waterborne Polyurethane Waterproof Coating

Performance & Product Features

Single-Component Application

Ready to use without complicated on-site component mixing.

Suitable for Damp Substrates

Can be applied to damp substrates with good bonding performance.

High Strength and Elongation

Designed to accommodate substrate shrinkage and deformation.

Strong Impermeability

Forms a continuous waterproof layer after application.

Good Low-Temperature Performance

Provides flexibility under low-temperature conditions according to the relevant technical classification.

Water-Based Formulation

Water-based system without organic solvent addition as stated in the product information.

 

JY-951 Waterborne Polyurethane Waterproof Coating

Application Scope

As a versatile waterproof multipurpose polyurethane coating, JY-951 fits a wide range of waterproofing and anti-seepage scenarios:
  1. Roof waterproofing: It acts as a high-performance polyurethane waterproof coating for roof, applicable to all new/old flat or sloped roofs, gutters, and eaves—particularly effective for irregular-shaped parts on roof structures.
  2. Ground building areas: It’s widely used in indoor spaces (toilets, bathrooms, kitchens, balconies, floors) and exterior wall waterproofing/moisture-proof finishing. It also functions as a qualified polyurethane waterproof coating for wood, catering to waterproofing needs of wood-based substrates in relevant indoor sections.
  3. Underground structures: As a dependable polyurethane waterproof coating for concrete, it’s suitable for waterproofing projects of concrete-based facilities like underground interior/exterior walls, basement slabs, underground tunnels, and elevator shafts.
  4. Composite applications: It can be used in combination with various waterproof rolls or other waterproof coatings to boost waterproofing effects and prolong service life. When compounded with SBS waterproof rolls, its waterproofing durability can reach over 25 years.

JY-951 Waterborne Polyurethane Waterproof Coating application

Performance Index

Serial No. Item Technical Indicators
Type I Type II
1 Tensile Strength (Mpa) ≥ 1.0 1.5
2 Elongation at Break (%) ≥ 300
3 Low Temperature Flexibility (Bend 180° around φ10mm rod) -10°C, No Cracks -20°C, No Cracks
4 Water Impermeability (0.3Mpa, 30min) Impermeable
5 Solid Content (%) ≥ 65
6 Drying Time (h) - Surface Dry ≥ 4
Drying Time (h) - Actual Dry ≥ 8
7 Tensile Strength Retention Rate (%) after Treatment - Heat Treatment ≥ 80
Tensile Strength Retention Rate (%) after Treatment - Alkali Treatment ≥ 60
Tensile Strength Retention Rate (%) after Treatment - Acid Treatment ≥ 40
Tensile Strength Retention Rate (%) after Treatment - Artificial Weathering Aging Treatment* ≥ - 80-150
8 Elongation at Break (%) after Treatment - Heat Treatment ≥ -
Elongation at Break (%) after Treatment - Alkali Treatment ≥ 200
Elongation at Break (%) after Treatment - Acid Treatment ≥ -
Elongation at Break (%) after Treatment - Artificial Weathering Aging Treatment* ≥ - 200
9 Heating Expansion and Contraction Rate (%) - Elongation ≥ 1.0
Heating Expansion and Contraction Rate (%) - Shrinkage ≥ 1.0

Precautions

  • Before construction, the coating should be fully stirred evenly. Do not add water arbitrarily except for the primer, so as to ensure quality.
  • When laying reinforcing fabric, it should generally be pasted during the application of the second coating layer.
  • Construction is strictly prohibited when the temperature is below 5°C or in rainy, snowy, or freezing weather. Do not perform other operations on the coating layer before the film is completely dry, so as not to damage the protective layer and affect the waterproof effect.
  • To ensure the waterproof effect, it is recommended that the dosage of this coating be more than 2.5 kg per square meter.
  • Settling is normal; just stir evenly before use.

Application of JY-951 Waterborne Polyurethane Waterproof Coating

Construction Method

This construction complies with the 5.1 standard specified in GB50207-94 Technical Code for Roof Engineering. If you’re seeking guidance on polyurethane waterproof coating how to use, the detailed process (covering dosage, thickness, and key steps) is as follows:
  1. Construction UsageWhen the waterproof layer coating thickness is 1.0mm, the dosage ranges from about 1.8kg/m² to 2.2kg/m² (actual usage depends on the base layer condition and coating thickness; for a total thickness of 1.5-2.0mm, it’s recommended to use over 2.5kg/m²).
  2. Construction ThicknessThe thickness of the waterproof layer coating shall not be less than 1.5mm, while the thickness of the vertical surface coating shall not be less than 1.2mm.
  3. Construction Technology ProcessThe overall workflow (a core part when learning how to apply polyurethane waterproof coating) is:Grassroots treatment → Construction of detailed additional waterproof layer → Construction of large-area coating waterproof layer → Quality inspection and acceptance → Construction of protective isolation layer
  4. Detailed Construction Steps
  • Grassroots Treatment: The base layer must be flat, firm, clean, and free of visible water; internal and external corners should be shaped into arcs. For old roofs, remove the original cracked, blistered waterproof layer and dust, repair sunken/damaged areas, and block leaks first. Special parts (water outlets, expansion joints) need flexible sealing. The brushing sequence follows: internal/external corners → vertical surfaces → large-area construction.
  • Primer Construction: Mix water and the coating at a 1:3 weight ratio, stir evenly before use. The primer boosts the coating’s permeability to the base layer and enhances adhesion.
  • Coating Application: Applicable methods include rolling, scraping, brushing, or polyurethane waterproof coating spray; the thin-layer multiple coating method is recommended (avoid over-thick single coats). Apply 3-4 coats in total (to reach 1.5-2.0mm thickness), and only apply the next coat after the previous one dries and forms a film. Lay reinforcing fabric in structurally weak sections.
  1. Key Points of Construction
  • Construction temperature should be 5°C~35°C; construction is prohibited in rainy, snowy, or freezing weather (below 5°C).
  • After each coat dries (surface-dry), conduct quality inspection; promptly repair missed coating or blistering areas.
  • For detailed nodes (internal/external corners, pipe roots, drainage outlets), apply 2-3 coats of additional waterproof layers.

JY-951 Waterborne Polyurethane Waterproof Coating

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Customer Reviews

From Mike, a building contractor in Texas, USA
We used JY-951 as the polyurethane waterproof roof coating for a residential sloped roof renovation last quarter. The thin-layer multiple coating method was easy to follow even for our junior workers, and the coating bonded well with the existing asphalt base. After 3 months of exposure to intense sunlight and occasional thunderstorms, there’s no cracking or water seepage at the gutter joints—exactly what we needed for a mid-range residential project.
From Lina, a renovation vendor in Kuala Lumpur, Malaysia
We sourced this product via china polyurethane waterproof coating for sale channels last year, mainly for bathroom and balcony waterproofing in high-rise apartments. The tropical climate here means constant humidity and sudden downpours, but JY-951’s adhesion to cement substrates held up well—we checked a 6-month-old bathroom last week, and there’s no mold or water leakage around the pipe roots. The dosage per square meter is reasonable too, which keeps our project costs stable.
From Klaus, a project engineer in Berlin, Germany
When we were looking for a water-based waterproof coating that meets EU environmental standards, we contacted the china polyurethane waterproof coating factory behind JY-951 directly. Their technical team provided detailed material safety data sheets promptly, and the product’s low-VOC formula complied with our local construction regulations. We used it for an underground parking lot’s concrete walls—after 8 months, the coating still maintains good elasticity without peeling off at the expansion joints.
From Tom, a maintenance worker in London, UK
I’ve tried products like firelye polyurethane waterproof coating before for old building wall repair. This time, we used JY-951 for a heritage building’s basement waterproofing (since it’s water-based and low-odor, which suited the indoor work restrictions). The construction could be done on slightly damp substrates, which saved us 1 day of base layer drying time. So far, 4 months later, the damp spots we used to have haven’t come back.

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About Our Factory

Great Ocean Waterproof Technology Co., Ltd. (formerly Weifang Great Ocean New Waterproof Materials Co., Ltd.) was established in 1999 and is located in Taitou Town, Shouguang City—the heart of China’s largest waterproof materials production base.

Covering an area of 26,000 square meters, our factory has developed into a national high-tech enterprise integrating scientific research, production, and sales in the waterproofing industry. After more than 25 years of continuous innovation, we now operate multiple advanced production lines for waterproof membranes, sheets, and coatings that meet domestic leading standards.

We specialize in a full range of waterproofing solutions, including the JY-951 Waterborne Polyurethane Waterproof Coating, single- and double-component polyurethane coatings, polymer cement (JS) coatings, polyethylene/polypropylene (polyester) waterproof membranes, PVC, TPO, CPE, non-asphalt reactive pre-laid polymer self-adhesive membranes, modified asphalt membranes, root-resistant membranes, spray-applied rubber asphalt coatings, non-curing rubber asphalt coatings, and dozens of other professional waterproof products.

Backed by strong technical expertise, a team of professional engineers and technicians, state-of-the-art equipment, and complete testing instruments, we ensure stable and reliable product quality. Our products have been certified by national authoritative testing institutions and we have earned prestigious honors including:

  • National Ministry of Agriculture “Comprehensive Quality Management Compliance”
  • ISO Quality Management System Certification
  • “Nationally Authorized Testing Qualified Product” by China Quality Inspection Association
  • Shandong Province Industrial Construction Product Registration Certificate
  • Industrial Product Production License

Adhering to the principles of integrity, pragmatism, and innovation, Great Ocean Waterproof Technology Co., Ltd. is committed to the philosophy of “win-win and shared success.” With high cost-performance products and excellent service, our products are widely sold in more than 20 provinces across China and exported to numerous countries and regions worldwide, earning consistent praise from customers.

We look forward to cooperating with you to create a drier, safer future together!

Great Ocean Waterproof Factory Great Ocean Waterproof Factory
Great Ocean Waterproof Factory Great Ocean Waterproof Factory
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